4
我正在写一个C#LINQ查询从SQL表中获取数据低于LINQ查询到数据放在一个嵌套的对象
表1
Id Status SubStatus
1 Review Pending
2 Review Complete
3 Review Approved
4 Review Denied
5 Info Processing
6 Info Pending
7 Info Requested
8 Info Received
9 Approval Approved
10 Review Approved
从上表的工作,我想放在一个对象中的数据如下面
public class LastStatusDto
{
public string StatusName { get; set; }
public int StatusId { get; set; }
public int Count { get; set; }
public IEnumerable<LastStatusChildDataDto> drillDownData { get; set; }
}
public class LastStatusChildDataDto
{
public string SubStatusName { get; set; }
public int Count { get; set; }
}
和样本结果(状态“评论”)看起来像下面
{
"statusName": "Review",
"statusId": 0,
"count": 5,
"drillDownData":
[{
"subStatusName":"Approved",
"count":2
},
{
"subStatusName":"Complete",
"count":1
},
{
"subStatusName":"Pending",
"count":1
},
{
"subStatusName":"Denied",
"count":1
},
]
}
对于上面的场景,写一个LINQ查询是一个好方法。我试图通过status
分组,但没能想出一个办法把substatuses
在嵌套对象像下面
var res = from status in context.Table1
group status by status.Status into s
select new LastStatusDto
{
Count = s.Count(),
StatusName = s.Key,
drilldownData = {/* ? */}
};
为什么'StatusId'是LastStatusDto的一个属性? – JuanR